CN216950642U - Diesel engine starting drive and vehicle - Google Patents
Diesel engine starting drive and vehicle Download PDFInfo
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- CN216950642U CN216950642U CN202123244316.XU CN202123244316U CN216950642U CN 216950642 U CN216950642 U CN 216950642U CN 202123244316 U CN202123244316 U CN 202123244316U CN 216950642 U CN216950642 U CN 216950642U
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- storage battery
- starting
- diesel engine
- energy storage
- storage capacitor
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- 239000003990 capacitor Substances 0.000 claims abstract description 42
- 238000004146 energy storage Methods 0.000 claims abstract description 36
- 239000002253 acid Substances 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 239000007858 starting material Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
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Abstract
The utility model relates to a diesel engine starting device, which comprises a storage battery, an energy storage capacitor and a control system, wherein the storage battery is connected with the energy storage capacitor; the system comprises a starting control module, a temperature sensor, a circuit, a preheating module and a boosting module; the starting control module respectively starts the preheating module, the energy storage capacitor and the storage battery to work through the contactors on the control circuit; the starting control module is electrically connected with the temperature sensor and receives the acquired temperature signal; the device of the utility model boosts the electric energy of the storage battery and stores the electric energy into the energy storage capacitor, firstly, the diesel engine is started through the energy storage capacitor, a part of load with the largest starting impact is born, the voltage of the energy storage capacitor is reduced to be the same as that of the storage battery, and then the storage battery is connected with the energy storage capacitor for parallel output, so that the voltage utilization rate can be improved, the problem of lower voltage of the storage battery in a low temperature state is solved, the service life of a device can be effectively prolonged, and the voltage drop is reduced.
Description
Technical Field
The utility model relates to the technical field of power supplies and power systems, in particular to a diesel engine starting device.
Background
At present, the problems of reduced discharge performance and low cut-off voltage exist in a lead-acid storage battery equipped on a ground equipment chassis or a top-mounted diesel generator set, and meanwhile, the viscosity of engine oil is increased in a low-temperature state, so that a diesel engine is difficult to start.
The energy storage capacitor and the storage battery have stronger complementarity, in particular to a super capacitor which is particularly suitable for occasions with high power and frequent charging and discharging; the super capacitor and the storage battery are used in a combined mode, respective advantages can be exerted, and high-power and high-energy power supply is achieved.
In the prior art, the energy storage capacitor and the storage battery are directly connected in parallel, so that the high-rate discharge capacity in a low-temperature state can be slightly improved, and the success rate of starting a diesel engine is improved, but the design has the problems of large leakage current and low discharge voltage in a non-working state; therefore, a method is urgently needed to be found for solving the defects existing in the parallel power supply of the energy storage capacitor and the storage battery and better playing the advantages of the combined use of the energy storage capacitor and the storage battery.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a diesel engine starting device, which can improve the success rate of starting a diesel engine at a low temperature and prolong the service life of a battery.
The technical scheme provided by the utility model is as follows: a diesel engine starting device comprises a storage battery, an energy storage capacitor and a control system;
the control system comprises a starting control module, a temperature sensor, a circuit, a preheating module and a boosting module;
the circuit is provided with at least three contactors, and the starting control module respectively starts the preheating module, the energy storage capacitor and the storage battery to work through the contactors on the control circuit;
the starting control module is electrically connected with the temperature sensor and receives the acquired temperature signal;
the input end of the boosting module is electrically connected with the storage battery, and the output end of the boosting module is electrically connected with the energy storage capacitor.
Further, the storage battery is a lead-acid storage battery.
Further, the energy storage capacitor comprises a plurality of super capacitors connected in series.
Further, the preheating module adopts a preheating plug for preheating.
The control method of the diesel engine starting device comprises the following steps:
s1, the start control module firstly acquires the temperature value acquired by the temperature sensor and the current voltage of the storage battery, and judges whether to start the diesel engine by using the storage battery output according to the acquired temperature and the storage battery voltage;
when the diesel engine cannot be started by using the output of the storage battery, starting the control module to start the contactor to electrify the preheating module, and preheating the diesel engine by the preheating module;
s2, after the start control module judges that preheating is completed according to the obtained temperature, the start control module controls the boosting module to boost the electric energy provided by the storage battery, and the energy storage capacitor is charged to a set voltage value;
and S3, the starting control module controls the starting contactor, the energy storage capacitor is connected to drive the starting diesel engine, the voltage of the energy storage capacitor is measured in real time by the voltage boosting module in the starting process, when the voltage is reduced to be the same as the voltage of the storage battery, the starting control module controls the starting contactor, the storage battery is connected to be connected to the energy storage capacitor in parallel and output, and the starting of the diesel engine is completed.
Further, in step S1, the conditions for starting the diesel engine by directly using the battery output are:
the voltage of the storage battery is more than 25V, and the temperature value is more than-5 ℃;
or the voltage of the storage battery is 24.5-25V, and the temperature value is more than 0 ℃;
or the voltage of the storage battery is 24-24.5V, and the temperature value is more than 5 ℃;
or the voltage of the storage battery is 23.5-24V, and the temperature value is more than 10 ℃.
Further, in step S2, the set voltage value of the energy storage capacitor is 30V.
The utility model also provides a vehicle which comprises the diesel engine starting device.
Compared with the prior art, the device boosts the electric energy of the storage battery and stores the electric energy into the energy storage capacitor, firstly, the diesel engine is started through the energy storage capacitor, a part of loads with the largest starting impact is borne, the capacitor voltage is reduced to be the same as the storage battery voltage in the starting process, and then the storage battery is connected with the capacitor to be output in parallel, so that the voltage utilization rate can be improved, and the problem that the storage battery voltage is lower in a low-temperature state is solved; and the volume of the super capacitor can be reduced. The contactor is used for controlling the storage battery to be connected in the zero voltage difference state, so that the service life of the device can be effectively prolonged, and the voltage drop is reduced.
In general, the diesel engine starting device provided by the utility model greatly improves the success rate of starting a diesel engine at a low temperature, reduces the discharge rate of a storage battery at the low temperature and prolongs the service life of the storage battery.
Drawings
Fig. 1 is a circuit configuration diagram of a diesel engine starting device according to the present invention.
Description of the symbols: the method comprises the steps of 1-a diesel engine starting device, 11-a storage battery, 12-an energy storage capacitor, 13-a starting control module, 14-a boosting module, 15-a temperature sensor, 16-a preheating module, 2-a whole vehicle controller and 3-a starter.
Detailed Description
The working process of the device according to the utility model is further illustrated by the following specific embodiments.
The diesel engine starting device comprises a storage battery, an energy storage capacitor and a control system;
as shown in fig. 1, the control system includes a start control module, a temperature sensor, a circuit, a preheating module, and a boosting module;
the circuit is provided with at least three contactors, and the starting control module respectively starts the storage battery, the preheating module and the energy storage capacitor to work through control contactors KM1, KM2 and KM 3;
specifically, the start control module controls KM3 through a switching value output DO1, controls KM1 through DO2, and controls KM2 through DO 3.
The starting control module is electrically connected with the temperature sensor and receives the acquired temperature signal;
the input end of the boosting module is electrically connected with the storage battery, and the output end of the boosting module is electrically connected with the energy storage capacitor.
The lead-acid storage battery with the nominal voltage of 28V is adopted as the storage battery.
The energy storage capacitor comprises a plurality of supercapacitors connected in series.
The preheating module adopts a preheating plug for preheating.
The starting control module is connected to the whole vehicle controller through a CAN bus and receives a low-temperature starting instruction of the whole vehicle controller.
The starting device is a starting auxiliary device under the low-temperature condition and is used for a vehicle chassis or a power generation system arranged on the vehicle chassis;
as shown in FIG. 1, the general power system comprises S1, S2 and two switches, wherein the switch S is firstly turned on before starting, and in a normal state, the storage battery can be directly started through the switch S2 to control the starting of the starter.
In a low-temperature state, a starting control module receives a low-temperature starting instruction transmitted by a vehicle control unit, then firstly obtains a temperature value acquired by a temperature sensor and the current voltage of a storage battery, and adopts different starting strategies according to different temperatures and storage battery voltages; the specific method comprises the following steps:
the voltage of the storage battery is more than 25V, the temperature value is more than-5 ℃, and the storage battery is directly used for outputting and starting the diesel engine;
the voltage of the storage battery is 24.5-25V, the temperature value is greater than 0 ℃, and the storage battery is directly used for outputting and starting the diesel engine;
the voltage of the storage battery is 24-24.5V, the temperature value is more than 5 ℃, and the storage battery is directly used for outputting and starting the diesel engine;
the voltage of the storage battery is 23.5-24V, the temperature value is more than 10 ℃, and the storage battery is directly used for outputting and starting the diesel engine;
under other conditions, the storage battery output cannot be directly used for starting the diesel engine, and the device needs to be used for auxiliary starting, and the specific operation is as follows:
the start control module controls DO3 to output a start contactor KM2 to electrify the glow plug, and the glow plug starts to preheat the diesel engine after being electrified. After the preheating is finished according to the acquired temperature judgment of the starting control module, the energy storage capacitor is charged after the electric energy provided by the storage battery is boosted by the control boosting module, the voltage of the energy storage capacitor is charged to 30V, the starting control module controls the DO1 to output the starting contactor KM3, the energy storage capacitor drives the starter to start the diesel engine after the KM3 is switched on, the boosting module can feed back the voltage of the energy storage capacitor in real time in the starting process, when the voltage is reduced to be the same as the voltage of the storage battery, the low-temperature starting control module controls the DO2 to output the starting contactor KM1, and the storage battery can output the energy storage capacitor in parallel to continue to drive the starter to finish the starting of the diesel engine after the KM1 is switched on.
Claims (5)
1. A diesel engine starting device is characterized by comprising a storage battery, an energy storage capacitor and a control system;
the control system comprises a starting control module, a temperature sensor, a circuit, a preheating module and a boosting module;
the circuit is provided with at least three contactors, and the starting control module respectively starts the preheating module, the energy storage capacitor and the storage battery to work through the contactors on the control circuit;
the starting control module is electrically connected with the temperature sensor and receives the acquired temperature signal;
the input end of the boosting module is electrically connected with the storage battery, and the output end of the boosting module is electrically connected with the energy storage capacitor.
2. The starting device for a diesel engine according to claim 1, wherein said battery is a lead-acid battery.
3. The diesel engine starting device of claim 1 wherein said energy storage capacitor comprises a plurality of supercapacitors connected in series.
4. The diesel engine starting device of claim 1 wherein said preheating module preheats using a glow plug.
5. A vehicle characterized by comprising the diesel engine starting device of any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123244316.XU CN216950642U (en) | 2021-12-22 | 2021-12-22 | Diesel engine starting drive and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123244316.XU CN216950642U (en) | 2021-12-22 | 2021-12-22 | Diesel engine starting drive and vehicle |
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| Publication Number | Publication Date |
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| CN216950642U true CN216950642U (en) | 2022-07-12 |
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| CN202123244316.XU Active CN216950642U (en) | 2021-12-22 | 2021-12-22 | Diesel engine starting drive and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370364A (en) * | 2021-12-22 | 2022-04-19 | 航天科工微电子系统研究院有限公司 | Diesel engine starting device and control method thereof |
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- 2021-12-22 CN CN202123244316.XU patent/CN216950642U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370364A (en) * | 2021-12-22 | 2022-04-19 | 航天科工微电子系统研究院有限公司 | Diesel engine starting device and control method thereof |
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